Three particle each of 1 kg mass are placed at corners of a right angled triangle AOB, 'O' being the origin of coordinate system (OA and OB along the x-direction and +ve y-direction). If OA = OB = 1m, the position vector of centre of mass (in metres) is

Three particle each of 1 kg mass are placed at corners of a right angl

1.	Three particle each of 1 kg mass are placed at corners of a right angled triangle AOB, 'O' being the origin of coordinate system (OA and OB along the x-direction and +ve y-direction). If OA = OB = 1m, the position vector of centre of mass (in metres) is
Answer» `(HAT(i)+hat(J))/(3)` `(hat(i)-hat(j))/(3)` `(2(hat(i)+hat(j)))/(3)` `hat(i)-hat(j)` ANSWER :A